The sons of Judah were Er, Onan, and Shelah. These three were born to him by the daughter of Shua, the Canaanitess. Er, the firstborn of Judah, was wicked in the sight of the Lord; so He killed him.
And it happened, when Israel dwelt in that land, that Reuben went and lay with Bilhah his father’s concubine; and Israel heard about it. Now the sons of Jacob were twelve: